CVE-2021-41264: @openzeppelin/contracts UUPSUpgradeable Vulnerability Vulnerability
CRITICALCVE-2021-41264 is a CRITICAL (CVSS 9.8) uupsupgradeable vulnerability vulnerability (CWE-665: Improper Initialization) affecting @openzeppelin/contracts libraries in the npm ecosystem. The issue involves uupsupgradeable vulnerability in @openzeppelin/contracts. Remediation is available by upgrading affected packages to version 4.3.2.
CVE-2021-41264 at a Glance
Security Impact
CVSS: 9.8
The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).
How to Fix CVE-2021-41264
To remediate this vulnerability, upgrade all affected @openzeppelin/contracts dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.
npm install @openzeppelin/contracts@4.3.2npm install @openzeppelin/contracts-upgradeable@4.3.2Run the following command in your project directory to verify that all resolved dependencies use the patched release:
npm ls @openzeppelin/contractsHow to Check if You Are Affected
To determine whether your Node.js application is affected by CVE-2021-41264, inspect your project dependencies using npm:
npm ls @openzeppelin/contractsAnalyze the terminal output to locate any version of @openzeppelin/contracts in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 4.3.2), your application is affected.
Note: The npm ls @openzeppelin/contracts command inspects dependencies declared in your package.json and lockfile; it does not perform automated runtime dynamic scanning.
Technical Details
Vulnerability Mechanism & Technical Analysis
This vulnerability is classified under CWE-665: Improper Initialization, where the product does not initialize or incorrectly initializes a resource, which might leave the resource in an unexpected state when it is accessed or used. In @openzeppelin/contracts, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.
Source Advisory Statement
CVE-2021-41264 Affected @openzeppelin/contracts Versions
2 component(s)| Product / Package | Ecosystem | Affected Versions | Fixed Version |
|---|---|---|---|
|
@openzeppelin/contracts
|
npm |
≥ 4.1.0
< 4.3.2
|
4.3.2
|
|
@openzeppelin/contracts-upgradeable
|
npm |
≥ 4.1.0
< 4.3.2
|
4.3.2
|
References
Frequently Asked Questions
What is CVE-2021-41264?
Which @openzeppelin/contracts versions are affected?
What version fixes CVE-2021-41264?
Is @openzeppelin/contracts affected?
Is @openzeppelin/contracts-upgradeable affected?
What is the CVSS score of CVE-2021-41264?
What CWE is associated with CVE-2021-41264?
How can I check npm dependencies for CVE-2021-41264?
Machine-readable OSV JSON
OSV v1.5 Schema
{
"schema_version" : "1.4.0",
"id" : "GHSA-5vp3-v4hc-gx76",
"modified" : "2021-11-16T21:44:47Z",
"published" : "2021-09-15T20:23:17Z",
"aliases" : [ "CVE-2021-41264" ],
"summary" : "UUPSUpgradeable vulnerability in @openzeppelin/contracts",
"details" : "### Impact\n\nUpgradeable contracts using `UUPSUpgradeable` may be vulnerable to an attack affecting uninitialized implementation contracts. We will update this advisory with more information soon.\n\n### Patches\n\nA fix is included in version 4.3.2 of `@openzeppelin/contracts` and `@openzeppelin/contracts-upgradeable`.\n\n### Workarounds\n\nInitialize implementation contracts using `UUPSUpgradeable` by invoking the initializer function (usually called `initialize`). An example is provided [in the forum](https://forum.openzeppelin.com/t/security-advisory-initialize-uups-implementation-contracts/15301).\n\n### References\n\n[Post-mortem](https://forum.openzeppelin.com/t/uupsupgradeable-vulnerability-post-mortem/15680).\n\n### For more information\n\nIf you have any questions or comments about this advisory, or need assistance executing the mitigation, email us at security@openzeppelin.com.",
"severity" : [ {
"type" : "CVSS_V3",
"score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
} ],
"affected" : [ {
"package" : {
"ecosystem" : "npm",
"name" : "@openzeppelin/contracts"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "4.1.0"
}, {
"fixed" : "4.3.2"
} ]
} ]
}, {
"package" : {
"ecosystem" : "npm",
"name" : "@openzeppelin/contracts-upgradeable"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "4.1.0"
}, {
"fixed" : "4.3.2"
} ]
} ]
} ],
"references" : [ {
"type" : "WEB",
"url" : "https://github.com/OpenZeppelin/openzeppelin-contracts/security/advisories/GHSA-5vp3-v4hc-gx76"
}, {
"type" : "ADVISORY",
"url" : "https://nvd.nist.gov/vuln/detail/CVE-2021-41264"
}, {
"type" : "WEB",
"url" : "https://github.com/OpenZeppelin/openzeppelin-contracts/commit/024cc50df478d2e8f78539819749e94d6df60592"
}, {
"type" : "WEB",
"url" : "https://forum.openzeppelin.com/t/security-advisory-initialize-uups-implementation-contracts/15301"
}, {
"type" : "PACKAGE",
"url" : "https://github.com/OpenZeppelin/openzeppelin-contracts"
} ],
"database_specific" : {
"cwe_ids" : [ "CWE-665" ],
"severity" : "CRITICAL",
"github_reviewed" : true,
"github_reviewed_at" : "2021-09-14T22:17:42Z",
"nvd_published_at" : "2021-11-12T18:15:00Z"
}
}